公开(公告)号：US20190292482A1

公开(公告)日：2019-09-26

申请号：US16317074

申请日：2017-10-27

Applicant: IDEMITSU KOSAN CO., LTD

Inventor： Yasuhito NAKAHARA ,  Masato YOKOMIZO ,  Hideki KAMANO

IPC: C10M169/04 ,  C10M101/00 ,  C10M137/10 ,  C10M137/04 ,  C10M137/08 ,  C10M135/22 ,  C10M133/44 ,  C10M141/10

Abstract: Provided are a lubricating oil composition excellent in anti-seizing properties and ant-wear properties, containing a base oil containing at least a mineral oil and a sulfur- and phosphorus-containing anti-wear agent, a mass ratio (S/P ratio) of a sulfur atom and a phosphorus atom contained in the composition being 7.5 or more and 16 or less; and a lubrication method and a gear each using the same.

公开(公告)号：US20250163342A1

公开(公告)日：2025-05-22

申请号：US18841473

申请日：2023-02-10

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Shinya SATO ,  Yasuhito NAKAHARA ,  Tsutomu ISHII

IPC: C10M141/10 ,  C10N40/04

Abstract: A lubricating oil composition including a base oil, a phosphorous acid ester, an imide-based compound, an amide-based compound, an amine-based compound, and a benzotriazole-based compound, wherein a content of the benzotriazole-based compound is 0.005 to 1.00 mass % based on the total amount of the lubricating oil composition.

公开(公告)号：US20230039111A1

公开(公告)日：2023-02-09

申请号：US17792362

申请日：2021-01-15

Applicant: Idemitsu Kosan Co.,Ltd.

Inventor： Yasuhito NAKAHARA ,  Hiroyuki TATSUMI ,  Keiichi NARITA ,  Koki ITO

IPC: C10M131/04 ,  C10M101/02 ,  C10M169/04

Abstract: A lubricating oil composition which contains a base oil and a fluorine compound and may have improved cooling performance. The base oil may contain a mineral oil. The base oil may have a kinematic viscosity in a range of from 1 to 25 mm2/s at 40° C. The content of the fluorine compound may be in a range of from 3 to 30% by weight based on the total amount of the composition.